A Cooperative Clustering Protocol for Energy Saving of Mobile Devices with WLAN and Bluetooth Interfaces
A Cooperative Clustering Protocol for Energy Saving of Mobile Devices with WLAN and Bluetooth Interfaces
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DOI：
10.1109/tmc.2010.161
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发表时间：
2011-04
影响因子：
7.9
通讯作者：
Jong-Woon Yoo;K. Park
中科院分区：
文献类型：
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作者：
Jong-Woon Yoo;K. Park
最广泛使用的无线通信标准之一是无线局域网(WLAN) (IEEE 802.11)。然而，WLAN存在严重的功耗问题。在本文中，我们提出了一种新颖的节能方法，该方法利用了配备 WLAN 和蓝牙接口的最新移动设备的多无线电功能。与以前的方法不同，我们的工作基于聚类。在我们的工作中，集群是一个蓝牙个人区域网络（PAN），它由一个簇头和多个常规节点组成。簇头充当 PAN 和 WLAN 之间的网关，使常规节点能够通过低功耗蓝牙访问 WLAN 基础设施。我们提出了一种分布式集群协议，即协作网络协议（CONET），它根据每个节点的带宽要求、能源使用和应用程序类型动态地重组集群。 CONET 不需要修改现有的无线基础设施，因为集群是独立于 WLAN 接入点执行的。我们用四个可穿戴计算设备实现了 CONET 原型，以评估真实硬件上的性能。我们还针对超过 100 个移动节点的大型网络模拟了 CONET。这两个结果都表明我们的方法可以有效降低 WLAN 的功耗。
One of the most widely used wireless communication standards is a Wireless Local Area Network (WLAN) (IEEE 802.11). However, WLAN has a serious power consumption problem. In this paper, we propose a novel energy saving approach that exploits the multiradio feature of recent mobile devices equipped with WLAN and Bluetooth interfaces. Unlike previous approaches, our work is based on clustering. In our work, a cluster is a Bluetooth Personal Area Network (PAN), which consists of one cluster head and several regular nodes. The cluster head acts as a gateway between the PAN and the WLAN, enabling the regular nodes to access the WLAN infrastructure via low-power Bluetooth. We present a distributed clustering protocol, Cooperative Networking protocol (CONET), which dynamically reforms clusters according to each node's bandwidth requirement, energy use, and application type. CONET does not require modifications of existing wireless infrastructures because clustering is performed independently of WLAN access points. We implemented the CONET prototype with four wearable computing devices to evaluate the performance on real hardware. We also simulated CONET for large networks of more than 100 mobile nodes. Both results demonstrate that our approach is effective in reducing the power consumption of WLAN.